Long March 3B launch Vehicle (LM-3B)

Launch Services



LM-3B

History

To meet demand of international satellite launch market, especially for high power and heavy communications satellites, the development of LM-3B launch vehicle was started in 1986 on the basis of the fight proven technology of Long March launch vehicles.




LM-3B
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LM-3B Structure
1. Payload Faring
2. Payload
3. Payload Adapter
4. Vehicle Equipment Bay
5. LH2 Tank
6. LOX Tank
7. Inter-stage Section
8. Third Stage Engine
9. Oxidizer Tank
10. Inter-tank Section
11. Fuel Tank
12. Second Stage Vernier Engine
13. Second Stage Main Engine
14. Inter-stage Truss
15. Oxidizer Tank
16. Fuel Tank
17. First Stage Engine
18. Strap-on Booster Cone
19. Strap-on Booster Oxidizer Tank
20. Strap-on Booster Fuel Tank
21. Stabilizer
22. Strap-on Booster Engine



Technical Data

LM-3B is the most powerful launch vehicle in Long March fleet based on LM- 3A as its core stage with four liquid boosters strapped on the frst stage. The development of LM-3B has been made upon good heritage of mature and flight proven technology of Long March family of launch vehicles. Its GTO capacity is 5,100kg.

In recent years, the LM-3B/E (Enhanced Version) launch vehicle is developed on the basis of LM-3B, increasing the GTO capacity up to 5,500kg. LM-3B/E has nearly the same configurations with LM-3B except its enlarged core stage and boosters. On May 14, 2007, the flight of LM-3B/E was performed successfully, accurately sending the NigcomSat-1 into pre-determined orbit.

With the GTO launch capability of 5,500kg, LM-3B/E is dedicated for launching heavy GEO communications satellite.

Stage Booster 1st Stage 2nd Stage 3rd Stage
Stage Diameter (m) 2.25 3.35 3.35 3.00
Stage Length (m) 15.326
-
23.272
-
9.943 12.375
Mass of Propellants (t) 37.746×4 171.775 49.605 18.193
41.5´4* 186.6*
Propellant N2O4/UDMH LOX/LH2
Engine YF-25 YF-21C YF-24E
YF-22E (Main)
YF-23C (Vernier)
YF-75
Engine Thrust (KN) 740.4×4 2961.6 742 (Main)
11.8×4 (Vernier)
78.5×2
Engine Specific Impulse
(N·Sec/kg)
2556.2 2556.2 2922.57 (Main)
2910.5 (Vernier)
4312
Booster 4
Lift-off Mass (t) 426/458.97*
Overall Length (m) 54.838/56.326*
Fairing Diameter (m) 4.00/4.20
Fairing Length (m) 9.56
GTO Launch Capacity (kg) 5100/5500*
* LM-3B/E launch vehicle


(as of April 1, 2010)
Launch Records
No. Flight No. Launch Date Payload Mission Launch Center Result
1 LM-3B F01 15 Feb. 1996 Intelsat-7A GTO XSLC* Failure
2 LM-3B F02 20 Aug. 1997 MABUHAYSAT GTO XSLC Success
3 LM-3B F03 17 Oct. 1997 APSTAR-II R GTO XSLC Success
4 LM-3B F04 30 May. 1998 CHINASTAR-1 GTO XSLC Success
5 LM-3B F05 18 July. 1998 SINOSAT-1 GTO XSLC Success
6 LM-3B F06 12 April. 2005 APSTAR-VI GTO XSLC Success
7 LM-3B F07 29 Oct. 2006 SINOSAT-2 GTO XSLC Success
8 LM-3B/E F08 14 May. 2007 NIGCOMSAT-1 GTO XSLC Success
9 LM-3B F09 5 Jul. 2007 CHINASAT-6B GTO XSLC Success
10 LM-3B F10 9 Jun. 2008 CHINASAT-9 GTO XSLC Success
11 LM-3B/E F11 30 Oct. 2008 VENESAT-1 GTO XSLC Success
12 LM-3B F12 31 Aug. 2009 PALAPA-D GTO XSLC Anomaly
Note:
* Xichang Satellite Launch Center